[    2.118116] ip (256) used greatest stack depth: 12392 bytes left
[    2.392025] ip (272) used greatest stack depth: 12360 bytes left
[    2.521446] ip (281) used greatest stack depth: 12352 bytes left
[    9.006242] ip (740) used greatest stack depth: 12344 bytes left
[   55.312732] netem: version 1.3
[  437.720172] ip (7386) used greatest stack depth: 12200 bytes left